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The molecular motor KIFC1 associates with a complex containing nucleoporin NUP62 that is regulated during development and by the small GTPase RAN.

Authors: Yang, WX  Jefferson, H  Sperry, AO 
Citation: Yang WX, etal., Biol Reprod. 2006 Apr;74(4):684-90. Epub 2005 Dec 21.
Pubmed: (View Article at PubMed) PMID:16371587
DOI: Full-text: DOI:10.1095/biolreprod.105.049312

KIFC1 is a C-terminal kinesin motor associated with the nuclear membrane and acrosome in round and elongating spermatids. This location in developing spermatids is consistent with possible roles in acrosome elongation and manchette motility or both. Here we describe the association of the KIFC1 motor with a complex containing the nucleoporin NUP62. Formation of this complex is developmentally regulated, being absent before puberty and appearing only after nuclear elongation has begun. In addition, the integrity of this complex is dependent on GTP hydrolysis and the GTP state of the small GTPase RAN. Concomitant with the association of this motor with the NUP62-containing complex is an apparent reorganization of the nuclear pore with loss of NUP62 from larger complexes containing other nucleoporins. The association of KIFC1 with a component of the nuclear membrane is more consistent with a role for this motor in acrosome/manchette transport along the nuclear membrane than for a role for this motor in transport of vesicles along the outer face of the manchette.


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CRRD Object Information
CRRD ID: 9831193
Created: 2015-03-03
Species: All species
Last Modified: 2015-03-03
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.